CN111090325B - Hot standby power switching system based on storage system - Google Patents
Hot standby power switching system based on storage system Download PDFInfo
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- CN111090325B CN111090325B CN201911117821.2A CN201911117821A CN111090325B CN 111090325 B CN111090325 B CN 111090325B CN 201911117821 A CN201911117821 A CN 201911117821A CN 111090325 B CN111090325 B CN 111090325B
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- 230000005669 field effect Effects 0.000 claims description 22
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- 230000009471 action Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
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- 230000009286 beneficial effect Effects 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/30—Means for acting in the event of power-supply failure or interruption, e.g. power-supply fluctuations
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/16—Error detection or correction of the data by redundancy in hardware
- G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
- G06F11/2015—Redundant power supplies
Abstract
The invention provides a hot standby power switching system based on a storage system, which comprises a PSU unit, a BBU unit, a first switch device, a second switch device and a voltage stabilizing circuit, wherein the PSU unit is connected to the storage system through the first switch device; the BBU unit is connected to the memory system through the second switching device; the voltage stabilizing circuit is connected to the output end of the BBU unit and is configured to stabilize the voltage value output to the second switching device by the BBU unit below the normal output voltage range of the PSU unit. The invention properly optimizes the traditional BBU unit switching circuit and modifies the traditional BBU unit switching circuit into a hot standby scheme, thereby improving the overall reliability of the system.
Description
Technical Field
The present invention relates to the field of storage systems, and more particularly, to a hot standby switching system based on a storage system.
Background
The unified storage series products comprise a server and a storage server product of a next generation platform, Dirty Data (Dirty Data) in a write cache can be stored in a scheme when an AC (alternating current) power failure occurs, a BBU (baseband processing unit) is used for standby power in the current industry, when the AC power failure occurs, a system can be switched to a BBU (baseband processing unit) for power supply through a related switching circuit, the circuit generally adopts an Oring circuit which is mature in the industry, and the switching action is completed by system control.
When the AC input of a Power Supply Unit (AC Power Supply) of a PSU (Power Supply Unit) is abnormal, the system can detect an AC _ FAIL signal of the PSU, the AC _ FAIL signal is generally sent to the system 1-10 ms ahead of the AC input, and after the system detects that the AC _ FAIL is abnormal, the output enable of a BBU (Battery Backup Unit) is turned on, and meanwhile, the output enable of the PSU is turned off (realized through an Oring line). And when the AC is recovered, the system detects that the AC _ FAIL is normal, the output enable of the BBU is closed, and the output enable of the PSU is opened at the same time.
The existing scheme has problems, wherein the most key is as follows: firstly, the switching process needs to be controlled, the switching time is related to board card capacitive load, circuit design and PCB wiring, the problem of switching time control easily causes data loss of storage equipment, the actual debugging process is very complex, the probability problem is easy to occur, and the positioning process is complex; and secondly, voltage drop is easy to occur in the switching process, and when the power is switched to the BBU for power supply, due to the fact that the BBU has weak loading capacity, the output of the combined circuit voltage is easy to be abnormal (voltage amplitude drops), and therefore a plurality of problems occur in the switching process.
Disclosure of Invention
In view of this, an object of the embodiments of the present invention is to provide a hot standby power switching system based on a memory system, so as to appropriately optimize a conventional BBU unit switching circuit and modify the conventional BBU unit switching circuit into a hot standby scheme, thereby improving the overall reliability of the system.
In view of the above objects, an aspect of the embodiments of the present invention provides a hot standby switching system based on a memory system, including a PSU unit, a BBU unit, a first switching device, a second switching device, and a voltage stabilizing circuit, wherein,
the PSU unit is connected to a storage system through the first switching device;
the BBU unit is connected to the memory system through the second switching device;
the voltage stabilizing circuit is connected to the output end of the BBU unit and is configured to stabilize the voltage value output to the second switching device by the BBU unit below the normal output voltage range of the PSU unit.
In some embodiments, the voltage regulation circuit is further configured to stabilize the voltage value output by the BBU unit to the second switching device above the memory system minimum supply voltage value.
In some embodiments, the first and second switching devices are diodes.
In some embodiments, the first and second switching devices are field effect transistors.
In some embodiments, a high-side ORing field effect transistor controller is also included, the high-side ORing field effect transistor controller connected to the gates of the 2 field effect transistors.
In some embodiments, the voltage regulation circuit is a buck/boost converter circuit.
Another aspect of an embodiment of the present invention provides a server, including a hot standby power switching system, including a PSU unit, a BBU unit, a first switching device, a second switching device, and a voltage stabilizing circuit, wherein,
the PSU unit is connected to the server storage system through the first switching device;
the BBU unit is connected to the memory system through the second switching device;
the voltage stabilizing circuit is connected to the output end of the BBU unit and is configured to stabilize the voltage value output to the second switching device by the BBU unit below the normal output voltage range of the PSU unit.
In some embodiments, the voltage regulation circuit is further configured to stabilize the voltage value output by the BBU unit to the second switching device above the memory system minimum supply voltage value.
In some embodiments, the first and second switching devices are field effect transistors.
In some embodiments, a high-side ORing field effect transistor controller is also included, the high-side ORing field effect transistor controller connected to the gates of the 2 field effect transistors.
The invention has the following beneficial technical effects: the hot standby power switching system based on the storage system provided by the embodiment of the invention adopts a simple MOS tube or diode combination to realize the switching action of the PSU unit and the BBU unit without an additional control chip and a control circuit, and adopts the BBU unit hot standby scheme, so that the product cost can be reduced, and the overall reliability of the system can be improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other embodiments can be obtained by using the drawings without creative efforts.
Fig. 1 is a schematic diagram of a hot standby power switching system based on a storage system according to an embodiment of the present invention.
Detailed Description
Embodiments of the present invention are described below. However, it is to be understood that the disclosed embodiments are merely examples and that other embodiments may take various and alternative forms. The figures are not necessarily to scale; certain features may be exaggerated or minimized to show details of particular components. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a representative basis for teaching one skilled in the art to variously employ the present invention. As one of ordinary skill in the art will appreciate, various features illustrated and described with reference to any one of the figures may be combined with features illustrated in one or more other figures to produce embodiments that are not explicitly illustrated or described. The combination of features shown provides a representative embodiment for a typical application. However, various combinations and modifications of the features consistent with the teachings of the present invention may be desired for certain specific applications or implementations.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the following embodiments of the present invention are described in further detail with reference to the accompanying drawings.
In view of the above object, an aspect of the embodiments of the present invention provides a hot standby power switching system based on a memory system, which is characterized by including a PSU unit, a BBU unit, a first switching device, a second switching device, and a voltage stabilizing circuit, wherein the PSU unit is connected to the memory system through the first switching device; the BBU unit is connected to the memory system through the second switching device; the voltage stabilizing circuit is connected to the output end of the BBU unit and is configured to stabilize the voltage value output to the second switching device by the BBU unit below the normal output voltage range of the PSU unit.
In some embodiments, the voltage regulation circuit is further configured to stabilize the value of the voltage output by the BBU unit to the second switching device above the memory system minimum supply voltage value. That is, the voltage value output by the BBU unit through the voltage stabilizing circuit is slightly lower than the normal output voltage range of the PSU unit, so that the PSU unit is determined to have a fault when the voltage value output by the PSU unit drops to exceed the voltage value output by the voltage stabilizing circuit. For example, the output voltage range of the PSU unit is generally 11.4-12.6V, so that the voltage stabilizing circuit at the output end of the BBU unit can stabilize the output voltage of the BBU unit to be about 11V. Therefore, the voltage of the BBU is stabilized at 11V, which is to ensure that the output voltage of the BBU is less than the output voltage of the PSU in any scene if the PSU works normally.
In some embodiments, the first switching device is a diode. Also, the second switching device is a diode.
In some embodiments, the first switching device is a field effect transistor. Also, the second switching device is a field effect transistor. For example, as shown in fig. 1, the field effect transistors are N-channel MOS transistors, one of the N-channel MOS transistors has one end connected to the PSU unit output terminal and the other end connected to the storage system power input terminal, and the other N-channel MOS transistor has one end connected to the voltage stabilizing circuit at the BBU unit output terminal and the other end connected to the storage system power input terminal. And the output combination of the PSU unit and the BBU unit is completed through two MOS tubes.
In some embodiments, a high side ORing field effect transistor controller is also included, the high side ORing field effect transistor controller connected to the gates of the 2 field effect transistors. As shown in fig. 1, the high-side ORing fet controller is LM 5050.
In some embodiments, the first and second switching devices meet the current requirements of the memory system.
In some embodiments, the voltage regulation circuit is a Buck-Boost (Buck-Boost) circuit.
In an embodiment according to the present invention, the output voltage range of the PSU unit is generally 11.4-12.6V, so that 1 additional voltage regulator circuit (Buck-Boost) is required at the output terminal of the BBU unit to regulate the output voltage of the BBU unit to about 11V. Therefore, the output voltage of the BBU unit is stabilized at 11V, which is to ensure that the output voltage of the BBU unit is less than the output voltage of the PSU unit in any scene if the PSU unit works normally. If the output of the PSU unit is named as PSU _12V, the output of the BBU unit is named as BBU _12V, two MOS tubes are added to combine the PSU _12V and the BBU _12V, and the combined output voltage is named as P12V. Because the level of the BBU _12V is lower than that of the PSU _12V in any scene, when the PSU works normally, the BBU unit cannot supply power to the system, and therefore the electric quantity of the BBU is ensured to be in a full-power state.
When the PSU unit is abnormal, such as AC power failure, output short circuit of the PSU unit and input overvoltage of the PSU unit, the output voltage of the PSU _12V is gradually reduced to 0V from about 11.4-12.6V. Since the output of the PSU unit has a load capacitor, and the voltage across the load capacitor does not suddenly change, it takes a certain time for the voltage to decrease from 12V to 0V. When PSU _12V drops below 11V, the BBU unit begins to take over system power. The 2 MOS transistors are on by default, so no control logic is needed in the whole switching process, and the voltage of the PSU _12V and BBU _12V is high, and the P12V is powered by the terminals. Because the load capacity of the PSU unit is far higher than that of the BBU unit, the voltage drop phenomenon during cold switching can not occur in the switching process. Therefore, the spare power switching circuit of the BBU is greatly simplified, and the system reliability is further improved.
Where technically feasible, the technical features listed above for the different embodiments may be combined with each other or changed, added, omitted, etc. to form further embodiments within the scope of the invention.
It can be seen from the foregoing embodiments that, in the hot standby power switching system based on a memory system provided in the embodiments of the present invention, a simple MOS transistor or diode is combined to implement a switching operation between a PSU unit and a BBU unit, and no additional control chip or control circuit is required.
An embodiment of the invention provides a server, which includes any one of the hot standby power switching systems described above.
The BBU switching circuit is mainly used in series products such as unified storage/server/storage server and the like, and the traditional BBU switching circuit is optimized properly and modified into a hot standby scheme, so that the overall reliability of the system is improved.
Those of skill would further appreciate that the various illustrative logical blocks, modules, circuits, and algorithm steps described in connection with the disclosure herein may be implemented as electronic hardware, computer software, or combinations of both. To clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, circuits, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as software or hardware depends upon the particular application and design constraints imposed on the overall system. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the disclosed embodiments of the present invention.
The various illustrative logical blocks, modules, and circuits described in connection with the disclosure herein may be implemented or performed with the following components designed to perform the functions described herein: a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination of these components. A general purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP, and/or any other such configuration.
It should be understood that, as used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly supports the exception. It should also be understood that "and/or" as used herein is meant to include any and all possible combinations of one or more of the associated listed items. The numbers of the embodiments disclosed in the embodiments of the present invention are merely for description, and do not represent the merits of the embodiments.
The above-described embodiments are possible examples of implementations and are presented merely for a clear understanding of the principles of the invention. Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, of embodiments of the invention is limited to these examples; within the idea of an embodiment of the invention, also technical features in the above embodiment or in different embodiments may be combined and there are many other variations of the different aspects of an embodiment of the invention as described above, which are not provided in detail for the sake of brevity. Therefore, any omissions, modifications, substitutions, improvements, and the like that may be made without departing from the spirit and principles of the embodiments of the present invention are intended to be included within the scope of the embodiments of the present invention.
Claims (6)
1. A hot standby power switching system based on a memory system is characterized by comprising a PSU unit, a BBU unit, a first switch device, a second switch device and a voltage stabilizing circuit, wherein,
the PSU unit is connected to a storage system through the first switching device;
the BBU unit is connected to the memory system through the second switching device;
the voltage stabilizing circuit is connected to the output end of the BBU unit and is configured to stabilize the voltage value output to the second switching device by the BBU unit below the normal output voltage range of the PSU unit;
wherein the first and second switching devices are field effect transistors; the system further includes a high-side ORing field effect transistor controller connected to the gates of the 2 field effect transistors; and the output ends of the two field effect transistors are combined and connected to the storage system.
2. The system of claim 1, wherein the voltage regulation circuit is further configured to stabilize the voltage value output by the BBU unit to the second switching device above the memory system minimum supply voltage value.
3. The system of claim 1, wherein the first and second switching devices are diodes.
4. The system of claim 1, wherein the voltage regulator circuit is a buck/boost converter circuit.
5. A server is characterized by comprising a hot standby power switching system, wherein the hot standby power switching system comprises a PSU unit, a BBU unit, a first switching device, a second switching device and a voltage stabilizing circuit,
the PSU unit is connected to the server storage system through the first switching device;
the BBU unit is connected to the memory system through the second switching device;
the voltage stabilizing circuit is connected to the output end of the BBU unit and is configured to stabilize the voltage value output to the second switching device by the BBU unit below the normal output voltage range of the PSU unit;
wherein the first and second switching devices are field effect transistors; the system further includes a high-side ORing field effect transistor controller connected to the gates of the 2 field effect transistors; and the output ends of the two field effect transistors are combined and connected to the storage system.
6. The server of claim 5, wherein the voltage regulation circuit is further configured to stabilize the voltage value output by the BBU unit to the second switching device above the memory system minimum supply voltage value.
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| CN111864885B (en) * | 2020-07-14 | 2022-04-22 | 苏州浪潮智能科技有限公司 | Hard disk power supply control device and method |
| CN111864890B (en) * | 2020-07-29 | 2023-01-24 | 北京浪潮数据技术有限公司 | BBU (base band Unit) discharge control system and method and memory array |
| CN112165254A (en) * | 2020-08-28 | 2021-01-01 | 苏州浪潮智能科技有限公司 | BBU charging control circuit and storage system |
| CN114020133B (en) * | 2021-10-27 | 2023-07-14 | 浪潮(北京)电子信息产业有限公司 | Storage system |
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| CN106452125A (en) * | 2015-08-10 | 2017-02-22 | 谷歌公司 | Converting alternating current power to direct current power |
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| CN103001315B (en) * | 2012-12-26 | 2016-12-28 | 上海斐讯数据通信技术有限公司 | A kind of power supply switch circuit |
| US10355520B2 (en) * | 2016-02-16 | 2019-07-16 | Dell Products, L.P. | System and method for achieving controlled load transition between power supplies and battery backup units |
| CN106602700A (en) * | 2016-10-20 | 2017-04-26 | 成都益睿信科技有限公司 | Power-down standby circuit |
| CN110445248B (en) * | 2019-08-28 | 2021-04-06 | 兴唐通信科技有限公司 | Main and standby power supply switching circuit and method |
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| CN106452125A (en) * | 2015-08-10 | 2017-02-22 | 谷歌公司 | Converting alternating current power to direct current power |
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